Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / cisco / enic / wq_enet_desc.h

diff --git a/kernel/drivers/net/ethernet/cisco/enic/wq_enet_desc.h b/kernel/drivers/net/ethernet/cisco/enic/wq_enet_desc.h
new file mode 100644 (file)
index 0000000..c7021e3
--- /dev/null
+++ b/kernel/drivers/net/ethernet/cisco/enic/wq_enet_desc.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef _WQ_ENET_DESC_H_
+#define _WQ_ENET_DESC_H_
+
+/* Ethernet work queue descriptor: 16B */
+struct wq_enet_desc {
+       __le64 address;
+       __le16 length;
+       __le16 mss_loopback;
+       __le16 header_length_flags;
+       __le16 vlan_tag;
+};
+
+#define WQ_ENET_ADDR_BITS              64
+#define WQ_ENET_LEN_BITS               14
+#define WQ_ENET_LEN_MASK               ((1 << WQ_ENET_LEN_BITS) - 1)
+#define WQ_ENET_MSS_BITS               14
+#define WQ_ENET_MSS_MASK               ((1 << WQ_ENET_MSS_BITS) - 1)
+#define WQ_ENET_MSS_SHIFT              2
+#define WQ_ENET_LOOPBACK_SHIFT         1
+#define WQ_ENET_HDRLEN_BITS            10
+#define WQ_ENET_HDRLEN_MASK            ((1 << WQ_ENET_HDRLEN_BITS) - 1)
+#define WQ_ENET_FLAGS_OM_BITS          2
+#define WQ_ENET_FLAGS_OM_MASK          ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
+#define WQ_ENET_FLAGS_EOP_SHIFT                12
+#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT   13
+#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
+#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT    15
+
+#define WQ_ENET_OFFLOAD_MODE_CSUM      0
+#define WQ_ENET_OFFLOAD_MODE_RESERVED  1
+#define WQ_ENET_OFFLOAD_MODE_CSUM_L4   2
+#define WQ_ENET_OFFLOAD_MODE_TSO       3
+
+static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
+       u64 address, u16 length, u16 mss, u16 header_length,
+       u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
+       u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
+{
+       desc->address = cpu_to_le64(address);
+       desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
+       desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
+               WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
+       desc->header_length_flags = cpu_to_le16(
+               (header_length & WQ_ENET_HDRLEN_MASK) |
+               (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
+               (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
+               (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
+               (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
+               (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
+       desc->vlan_tag = cpu_to_le16(vlan_tag);
+}
+
+static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
+       u64 *address, u16 *length, u16 *mss, u16 *header_length,
+       u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
+       u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
+{
+       *address = le64_to_cpu(desc->address);
+       *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
+       *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
+               WQ_ENET_MSS_MASK;
+       *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
+               WQ_ENET_LOOPBACK_SHIFT) & 1);
+       *header_length = le16_to_cpu(desc->header_length_flags) &
+               WQ_ENET_HDRLEN_MASK;
+       *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
+       *eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_EOP_SHIFT) & 1);
+       *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
+       *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
+       *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
+               WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
+       *vlan_tag = le16_to_cpu(desc->vlan_tag);
+}
+
+#endif /* _WQ_ENET_DESC_H_ */